Meta-analysis of secure randomised controlled trials of β-blockade to prevent perioperative death in non-cardiac surgery

Bouri and collegues have analysed data from multiple trials of beta blockade prior to non-cardiac surgery. Guidelines for management have been based on these findings. However, exclusion of one report, now discredited, suggests an increase in morbidity rather than a protective effect. They note the increase in the risk of mortality, the primary end-point at 30 days of 27%. These findings indicate the need for further well controlled studies into the use of beta blockers.